Institute Newton C. Braga

Circuit Bench

Comarator Isolated Interface (CB4593E)
In the figure we have an interface using an optical coupler and the comparator LM339 or any...
VHF marker (CB4193E)
Using 18 or 24 MHz crystals, this circuit is intended for producing reference signals with...
Headphones Amplifier III (CB976E)
We found this amplifier in a publication of 1990, but it can be mounted today with some exchanged...